Kinda hard for OpenGL to compete with a billion dollar graphics API behemoth that is DirectX, not to mention cross compatibility with Xbox consoles for easy porting.

In the end, it completely depends on developer support, and developer support relies heavily on cost-effectiveness and profitability which depends on the platform friendliness. If I were to make a game, and choosing DirectX means that I can port it to XBLA in a matter of a weekend so I can have more platform exposure, I am definitely going for DirectX.

Other than a few games, I can't see OpenGL being a universal standard anytime soon.